AJAX

function connect() {
    var temp_xmlHttp = false;
    if(window.XMLHttpRequest) {
            temp_xmlHttp = new XMLHttpRequest();
    } else if(window.ActiveXObject) {
        try {
            temp_xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
        } catch (e) {
            try {
                temp_xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {
                // Stone age browser.
            }
        }
    }
    return temp_xmlHttp;
}